in the clinton administration warning that clinton should not go out and say you get to keep your doctor and your healthcare plan because we don't want to get caught overpromising something we know isn't true. excellent. >> >>> this is a fox news alert. the crisis in ukraine growing more urgent by the minute. you crane leaders accusing moscow of invading. russian planes crossing the border. seizing the main airport. ukraine's acting president urging president putin to stop provocations. and pull back military sources. we have a live report from the region in a few minutes. here in the united states, president obama warning russia there will be costs for military intervention in ukraine. from the latest correspondent jennifer griffin is live at the pentagon. jennifer? >> greta, officials tell us they are seeing military movement by russian forces into and out of the area. they are moving by land and by sea. this video apparently shows some of the dozen or so russian combat helicopters crossing the border into the ukraine today. sources tell us approximately 2,000 russian troops may have l